EP 3820044 A4 20220105 - STEPLESS SPEED REGULATION CIRCUIT AND METHOD FOR SINGLE-PHASE MOTOR
Title (en)
STEPLESS SPEED REGULATION CIRCUIT AND METHOD FOR SINGLE-PHASE MOTOR
Title (de)
SCHALTUNG UND VERFAHREN ZUR STUFENLOSEN DREHZAHLREGELUNG FÜR EINEN EINPHASIGEN MOTOR
Title (fr)
CIRCUIT ET PROCÉDÉ DE RÉGULATION DE VITESSE CONTINUE D'UN MOTEUR MONOPHASÉ
Publication
Application
Priority
- CN 201811566584 A 20181219
- CN 2019104700 W 20190906
Abstract (en)
[origin: US2020036317A1] A stepless motor driving circuit provides a sinusoidal shaped chopping signal for driving a motor. The driving circuit has: a switch circuit having an input which receives a rectified signal rectified from a sinusoidal AC signal and having a first output and a second output where the motor is coupled between; a synchronizing signal generating circuit which generates a synchronizing signal relating to the sinusoidal AC signal; and a switch driving circuit which selects and chops at least one switch in the switch circuit according to the synchronizing signal, and to form the sinusoidal shaped chopping signal which is corresponding to the sinusoidal AC signal.
IPC 8 full level
H02P 25/04 (2006.01); H02P 27/08 (2006.01)
CPC (source: CN EP US)
H02P 23/0004 (2013.01 - US); H02P 25/04 (2013.01 - CN EP); H02P 27/08 (2013.01 - EP US); H02P 23/26 (2016.02 - EP); H02P 2201/00 (2013.01 - EP); Y02P 80/10 (2015.11 - EP)
Citation (search report)
- [IAY] JP H10191676 A 19980721 - SHARP KK
- [Y] US 5789723 A 19980804 - HIRST B MARK [US]
- [Y] WO 2007113859 A1 20071011 - SIBER S R L [IT], et al
- See also references of WO 2020125072A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 10972038 B2 20210406; US 2020036317 A1 20200130; CN 111342735 A 20200626; EP 3820044 A1 20210512; EP 3820044 A4 20220105; WO 2020125072 A1 20200625
DOCDB simple family (application)
US 201916563249 A 20190906; CN 201811566584 A 20181219; CN 2019104700 W 20190906; EP 19897682 A 20190906